Science – What We Just Did

How does the light bulb in a circuit work?

Before the circuit, is closed, there are already electrons in the wires. When the circuit is closed, the electrons start moving together, at the same time. Electric charges come out of the negative side of the cell/battery, and travel to the light bulb, where the electric energy is transferred to heat and light energy. Then, the charges go back to the battery to recharge their energy.